Yes, the Eastern Front is much neglected, even more than the whole war... Sad. Being russian, i just have to remind you of the most brilliant feat of arms of russian army in that war: Brusilov's offensive
http://en.wikipedia.org/wiki/Brusilov_Offensive
The first successful assault against deeply entrenched enemy in the Great War, knockout of Germany's strongest ally, 400,000 captured, invention of shock groups, etc. etc. All of that with no tanks, no gas, no significant numerical superiority - just skills.
Douglas Haig tried to do the same in the west again and again, and never succeded...